Valve-grinder.



c. D.l Rosgcmms.

VALVE GRINDER. APPLICATION FILED JUNE I3 i918,

Patent-ed Apr. 1,1919.`

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Arm/Mfrs iinienn erairne PATENT onine-n.,

CHRLES Xt RSEGRANS, OF HONQLULU, TERRITORY OF HAWAII.

'VALVE-GRINDER.

` .application filed lune 13, 1918. Serial No, 239,764.

To @ZZ l'li/:fiom it' may 'con cem:

Be it known that I, CHARLES DUKEWELL liesncnans, a citizen ef the United States, and a. resident of the city and county of I'lonolnln, Territory of Hawaii, have invent-I ed a. new and Impreved Valve-Grimfler, of which the following is a description.

My invent-ien relates mere particularly to a 'valve grinder for use with the vaives of internal i eolnhustieu engines, insuring.;` the gripping,r 'ot' tlnfvalve and@Facilitating its removal and manipulation fer grinding', In the grinding operation it is necesez, ry to raise the valve 'from the seat every few turns to change its `inmoral pesition on the seat and to d0 this hy ordinary methed is attended with great inconvenience, whereasl with my iin- 'prevmljy grinder this may he accomplished with faeility and despatch.' n

Reference istofhehaiflto the aceompan'yiup,` drawings forming@ 'part ot' 4this specie" liealieu, itifleinfundeitood that the dra'iving's are inere'y illustrative et one exaniple olf the inventioiji.y

Figure l is a partly sectional eide elevation of a valve grinder embodying my inventina,showing the same in use; n

rFig. is a iside elevation oi the valve grrinderin me, the view being taken at right angles to Fig. l.

in earryiug out my invention a shank l() oi@ suitable length provided having a handle il. hoth of which may he of any pracl tical term. The valve engaging device consiste oi a vaeuun'i .cup lf2 which in i'u'aetiee is el' a .ze te he applied. a' valve A.. i ln the prei. rred terni of my invention the vacuum eup if; 'l'irned with, a @tern i?, on the hail: therei'ii. Said stern is rereived in a tubular threadei'i holder lvl-,the rear end 15 oi.l '-vhieh runter'aifiy in closed 'ller strength and te enggafgi'-, the means for eoi'meeting the Cup helder with the alianl; 1U.

n the sides et the insider liadjaeent to the closed rear end or the rap if) ofthe helder, diametricai opposite 'holes il? are formed, adapted to leesely rereive the inturi'iedends eil @moeite arme l? en a votre i8 to permit'. pivotal movement of the helderi4 relativehv te the yeli'e.r Said yoke la in received atis approximate eenter in a slot iii? lin-ined in tin- .liront enl me the shank l() and is pivotallv ,eeeured la' a in reverse pin 1li? ai', right fot-glee te the pirated ends of th: arms l Thus, the yeke 151 rnd the pivelv Specification of Letters Patent.

Y' Patented Apr. i, i919.

pin 19 constitute a gimbal joint between the holder 1l andthe handle l0.

lilith a tool thus constructed the front end carrying the cup 12 is entered througli the usual valve cap (not Shmv'nQand the erp applied to the topv of the valve A toengage the latterand hold the same in a. manner to permit of the same being lifted or turned. It is to he understood that the usual pin for retaining thevalve spring (not shown) is removed before the cup 12 applied te the 'alve. lilith the valve firmly held by the ac-num cup, the valve may be given any desired movement for grinding;7 Jthe giinhal joint permitting variousr angular positifms of the stem l0 relative-ly to the plane of the vacuum cup and valve. The Whole operation involving the relieving' ot the valve from its spring' pressrue, and the grinding of the..

valve can be thus carried out quickly and with convenience. e

I would state in conclusion thatI while the illustrated example constitutes a. practical embodiment ot my invention7 i do not limit nrw/sell strictly to Ythe mechanical details hereinl illustrated, sinne manifestly the same Can he considerably varied without depar ture 'from the spirit of the invention as detinedin thiy appended claims.

Having thus described my inveinion7 I claim as new and desireto secure by Letters Patent:

1. A valve grinder including' a y'annum cup adapted to he applied to a valve, a holder carrying' said cup, a yoke having opposite arms' formed with .inturued ends pivotally engaging said holder at apposite sidra, a handled shank having a slot therein at the front end, in which the yoke is received atits approximate center, and a pivot P piu at right angles to Said pivoted arms off the yoke-and (fennel-ting,l the latter with said ennemie n. nosnena tipi-:x (lflmu, "Nimah Uneven',

W i t; 

